/usr/share/pyshared/weboob/tools/captcha/virtkeyboard.py is in python-weboob-core 0.g-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 | # -*- coding: utf-8 -*-
# Copyright(C) 2011 Pierre Mazière
#
# This file is part of weboob.
#
# weboob is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# weboob is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with weboob. If not, see <http://www.gnu.org/licenses/>.
import hashlib
import tempfile
try:
from PIL import Image
except ImportError:
raise ImportError('Please install python-imaging')
class VirtKeyboardError(Exception):
def __init__(self, msg):
Exception.__init__(self, msg)
class VirtKeyboard(object):
def __init__(self, file, coords, color, convert=None):
# file: virtual keyboard image
# coords: dictionary <value to return>:<tuple(x1,y1,x2,y2)>
# color: color of the symbols in the image
# depending on the image, it can be a single value or a tuple
# convert: if not None, convert image to this target type (for example 'RGB')
img = Image.open(file)
if convert is not None:
img = img.convert(convert)
self.bands = img.getbands()
if isinstance(color, int) and not isinstance(self.bands, str) and len(self.bands) != 1:
raise VirtKeyboardError("Color requires %i component but only 1 is provided"
% len(self.bands))
if not isinstance(color, int) and len(color) != len(self.bands):
raise VirtKeyboardError("Color requires %i components but %i are provided"
% (len(self.bands), len(color)))
self.color = color
(self.width, self.height) = img.size
self.pixar = img.load()
self.coords = {}
self.md5 = {}
for i in coords.keys():
coord = self.get_symbol_coords(coords[i])
if coord == (-1, -1, -1, -1):
continue
self.coords[i] = coord
self.md5[i] = self.checksum(self.coords[i])
def check_color(self, pixel):
return pixel == self.color
def get_symbol_coords(self, (x1, y1, x2, y2)):
newY1 = -1
newY2 = -1
for y in range(y1, min(y2 + 1, self.height)):
empty_line = True
for x in range(x1, min(x2 + 1, self.width)):
if self.check_color(self.pixar[x, y]):
empty_line = False
if newY1 == -1:
newY1 = y
break
else:
break
if newY1 != -1 and not empty_line:
newY2 = y
newX1 = -1
newX2 = -1
for x in range(x1, min(x2 + 1, self.width)):
empty_column = True
for y in range(y1, min(y2 + 1, self.height)):
if self.check_color(self.pixar[x, y]):
empty_column = False
if newX1 == -1:
newX1 = x
break
else:
break
if newX1 != -1 and not empty_column:
newX2 = x
return (newX1, newY1, newX2, newY2)
def checksum(self, (x1, y1, x2, y2)):
s = ''
for y in range(y1, min(y2 + 1, self.height)):
for x in range(x1, min(x2 + 1, self.width)):
if self.check_color(self.pixar[x, y]):
s += "."
else:
s += " "
return hashlib.md5(s).hexdigest()
def get_symbol_code(self, md5sum):
for i in self.md5.keys():
if md5sum == self.md5[i]:
return i
raise VirtKeyboardError('Symbol not found')
def check_symbols(self, symbols, dirname):
# symbols: dictionary <symbol>:<md5 value>
for s in symbols.keys():
try:
self.get_symbol_code(symbols[s])
except VirtKeyboardError:
if dirname is None:
dirname = tempfile.mkdtemp(prefix='weboob_session_')
self.generate_MD5(dirname)
raise VirtKeyboardError("Symbol '%s' not found; all symbol hashes are available in %s"
% (s, dirname))
def generate_MD5(self, dir):
for i in self.coords.keys():
width = self.coords[i][2] - self.coords[i][0] + 1
height = self.coords[i][3] - self.coords[i][1] + 1
img = Image.new(''.join(self.bands), (width, height))
matrix = img.load()
for y in range(height):
for x in range(width):
matrix[x, y] = self.pixar[self.coords[i][0] + x, self.coords[i][1] + y]
img.save(dir + "/" + self.md5[i] + ".png")
class MappedVirtKeyboard(VirtKeyboard):
def __init__(self, file, document, img_element, color, map_attr="onclick", convert=None):
map_id = img_element.attrib.get("usemap")[1:]
map = document.find("//map[@id='" + map_id + "']")
if map is None:
map = document.find("//map[@name='" + map_id + "']")
coords = {}
for area in map.getiterator("area"):
code = area.attrib.get(map_attr)
area_coords = []
for coord in area.attrib.get("coords").split(','):
area_coords.append(int(coord))
coords[code] = tuple(area_coords)
VirtKeyboard.__init__(self, file, coords, color, convert)
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